Yes, it took an absolute massacre for Blount to really see the field over Dion Lewis (who still looks good out there), but this is still a huge step up from the questions raised after a no show in Week 2.
While it appears to be the Dion show first, Blount showed that is still an effective runner and good to go at the goal line. Projecting their usage going forward - it seems like Lewis is going to be the primary back for New England in competitive games, unless the opponent is really soft against the run (and even then Lewis may still get a lot of work). Blount will come in as a second half hammer, or only if the game is more in hand. Pretending to know what New England will do is silly - but the Patriots' schedule does have a ton of run stuffing defenses still to come, so there's no doubt Lewis will have a huge role.
The question is, does Blount need a blowout to be effective? I do not believe so. I think this shows everyone there that he is still good for the style that he brings to the table, and Belichick will find a way for that to work in. Blount won't finish the year as the Patriots' leading RB in points scored anymore it seems, but there's a lot to go around, as that offense is going to score a lot of points.